That being said he's definitely one of the dirtiest players in the league

Those 2 descriptions don't mesh. Like hartnell, if you're capable of that level of dbaggery on the ice, there's something wrong with you in real life.

Pens fans used it with Cooke for the longest time

Also, obviously a MUCH different level but a guy I played with for years who was the nicest guy ever was the diritiest hockey player I ever knew (although I suspect he just didn't know how to to check properly (always went with elbows up / literally "knocked out" a couple people))

What's wrong with Hartnell in real life? By all accounts, he is a really nice guy, and he has even played along with opposing fans. There's a huge difference between Hartnell (a skilled agitator) and Subban (someone that has zero regard for the safety of his fellow players). I like Hartnell.